package chongzhuo20231201;

public class chongzhuo20231201 {

	public static void main(String[] args) {
		double v=300000.0;
		double distance=0.0;
		distance = v * 60 * 60 * 24 * 365;
		System.out.println("一光年的距离是： "+distance);
		

	}

}
